Structural Mechanics
本课程是航空航天工程专业的核心专业基础课，讲授杆系结构和薄壁结构的力学分析方法。内容包括平面桁架、刚架的内力与位移计算，力法、位移法、矩阵位移法等结构分析基本方法，结构稳定性分析，薄壁杆件的约束扭转与弯曲，以及复合材料结构力学基础。课程注重培养学生对航空航天结构的分析能力，为后续飞行器结构设计等课程提供理论支撑。
This core course for aerospace engineering teaches structural analysis methods for trusses and thin-walled structures. Topics include internal forces and displacements of planar trusses and frames, force method, displacement method, matrix displacement method, structural stability, constrained torsion and bending of thin-walled members, and composite structure fundamentals. The course develops students' ability to analyze aerospace structures and provides theoretical support for subsequent aircraft structural design courses.
学生需对给定的简化机翼盒段结构进行力学分析。结构由上下蒙皮、翼梁腹板、翼肋组成，承受给定的升力分布与扭矩。使用材料力学和薄壁结构理论计算各构件的正应力、剪应力分布，以及机翼的弯曲挠度与扭转变形。验证结构的强度和刚度是否满足设计要求，并用有限元软件进行对比验证。提交完整的计算报告与结果分析。
Students analyze a simplified wing box structure consisting of upper and lower skins, spar webs, and ribs under given lift distribution and torque. Using mechanics of materials and thin-walled structure theory, calculate normal stress and shear stress distributions, as well as bending deflection and torsional deformation. Verify strength and stiffness against design requirements, and compare with finite element analysis results. Submit a complete report with calculations and analysis.